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DC Motors

DC Motors
A dc motor can be easily identified by

Size of conductor
Winding
Commutator
Yoke

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DC Motors
Dc shunt motors are used for driving

Machine tools
Cranes
Hoist
Trains

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DC Motors
The resistance of shunt field winding as compared to series field winding is

None of the listed here
More
Less
The same

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DC Motors
Compensating winding in a dc machine is placed

On armature
None of the listed here
On yoke in the interpolar gap
On yoke in the pole faces

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DC Motors
The direction of rotation of a D.C. series motor can be changed by

Interchanging field terminals
Either of (A) and (B) above
Interchanging supply terminals
None of these

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DC Motors
Three point starter can be used for

Both shunt and compound motor
Shunt motor only
Compound motor only
Series motor only

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